A：
B：
C：
D：
①细胞核 ②叶绿体 ③线粒体 ④细胞质基质
Carol doesn't know what she should take for her trip． (改为同义句)
Carol doesn't know____ ____ ____for her trip．
A. ____
B. ____
C. ____
D. ____
E. ____
